| 单词 | substratum |
| 释义 | substratum (sʌbstrɑːtəm , US -streɪt- ) Word forms: substrata countable noun A substratum of something is a layer that lies under the surface of another layer, or a feature that is less obvious than other features. [formal] ...its deep substratum of chalk. [+ of] His re-creation of the city is credible, with a substratum of fact to bolster the fiction. |
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